Image forming apparatus
AssigneeRicoh Company, Ltd.
InventorNobuo Takami
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a developing unit implemented as a revolver or rotary unit driven by a revolver motor, which includes a motor case. A motor support member supports the surface of the motor case at a position beneath the center of gravity of the revolver motor. The motor support member reduces a moment acting on a motor mount about the apparent center of rotation of the revolver motor due the weight of the motor to substantially zero. This configuration enhances the durability of the motor mount or vibration preventing member and thereby protects the revolver from defective rotation.
Claims6
An image forming apparatus comprising:
- an apparatus body;
- a rotary unit rotatable relative to said apparatus body;
- and
- a drive unit for causing said rotary unit to rotate to and stop at a preselected position;
- said drive unit comprising:
- a motor member;
- a vibration preventing member intervening between a motor case mounting surface of said motor member, which is substantially perpendicular to an axis of said motor member, and said apparatus body, said motor member being mounted on said vibration preventing member;
- and
- a motor support member for supporting a weight of said motor member on a motor case surface substantially parallel to the axis of said motor member.
An image forming apparatus comprising:
- an apparatus body;
- an image carrier for forming a latent image thereon;
- writing means for writing the latent image on said image carrier;
- and
- a rotary unit rotatable relative to said apparatus body;
- a drive unit for causing said rotary unit to rotate to and stop at a preselected position;
- said drive unit comprising:
- a motor member;
- a vibration preventing member intervening between a motor case mounting surface of said motor member, which is substantially perpendicular to an axis of said motor member, and said apparatus body, said motor member being mounted on said vibration preventing member;
- and
- a motor position restricting member contacting or adjoining a motor case surface substantially parallel to an axis of said motor member;
- wherein said motor position restricting member is so positioned as to obstruct a displacement of a motor case ascribable to a force exerted by said rotary unit on said motor member when said drive unit is driving said rotary unit, but when said writing means does not write a latent image on said image carrier.
Dependencies are inferred from the claim text.